baber/WOPTO huggingface dataset:
Patent GB-109874-A (GB)
Title: Improvements in Necktie Retainers.
Inventor: LEE JOHN HENRY
IPC: A41D25/02
Filed: 1917-05-07
Abstract: 109,874. Lee, J. H. May 7, 1917. Necktie-retainers.-In a retainer of the type comprising an attachment plate provided with a pair of prongs bent approximately parallel to the plate and adapted to slide one on each side of the neck of a collar stud, the slot between the prongs C extends into the attachment plate A. The plate A may be provided with sewing-holes, or as shown, with a tongue D, which is bent up after the plate has been inserted into the folds of the neck-tie.
Patent GB-752508-A (GB)
Title: Improvements in or relating to resins from steam-cracked petroleum fractions
IPC: B04C5/20
Filed: 1954-06-01
Abstract: Soluble petroleum resins are prepared by blending a C5 steam-cracked petroleum fraction, relatively free of cyclopentadienes and dimers and boiling up to 38 DEG  C., with from 10 to 50 per cent of cyclopentadiene dimers, and polymerizing the blend in liquid phase at from -20 DEG  to 90 DEG  C., preferably 0 DEG  to 75 DEG  C., in the presence of a Friedel-Crafts catalyst.  The C5 fraction may be obtained from a C5 to C9 fraction boiling up to 140 DEG  C., obtained from a steam-cracked unsaturated petroleum oil by heating the fraction, e.g. between 100 DEG  and 220 DEG  F., to dimerise the cyclopentadiene, separating the dimers, for example as the bottom fraction of a distillation tower and distilling to obtain a mixture of the C5 fraction boiling at up to 38 DEG  C., and isoprene, which may then be separated, e.g. by extractive distillation with acetone. In the polymerization, which may be continuous, the catalyst may be added continuously or batchwise and the products washed with water, caustic or dilute sulphuric acid, or the catalyst residues precipitated as a methanol complex and filtered off.  The polymeric resin, stripped free of unreacted components or low molecular weight products, may be used as a base for paints, varnishes, inks and floor tiles.
Patent GB-407312-A (GB)
Title: Process for the production of sodium nitrate and calcium chloride
IPC: C01F11/24
Filed: 1932-06-08
Abstract: In the production of sodium nitrate from nitrous gases and sodium chloride, the nitrate solution obtained by absorbing the residual gases of a nitric acid plant in a soda solution is converted with ammonium carbonate to ammonium nitrate and a soda solution for re-use by the use of base-exchanging substances, the ammonium nitrate is treated with lime or limestone to obtain a calcium nitrate solution, and the latter converted with sodium chloride to sodium nitrate by the use of base-exchanging substances in the manner described in Specification 407,311. Ammonia evolved in the last step but one is converted to carbonate for re-use in the preceding step, whilst the calcium nitrate solution may be concentrated for use in the last step by using it in the nitric acid absorption plant when the nitric acid obtained is to be converted to calcium nitrate.  Sea water or other suitable naturally occurring solution may be used to provide sodium chloride for the last step of the process.
Patent GB-462878-A (GB)
Title: A device for automatically controlling the filling of reservoirs, tanks and the like
IPC: F16K21/20
Filed: 1936-06-11
Abstract: 462,878. Filling tanks &c. TECALEMIT, Ltd. June 11, 1936, No. 16368. Convention date, July 25, 1935. [Class 21] A device for automatically stopping the filling of reservoirs, tanks, &c., e.g. petrol tanks, when a predetermined level is reached comprises an injector nozzle 2 which serves for filling the container and produces suction in a chamber 8 containing a diaphragm, piston &c. 6 connected by a rod 5 with a valve 4 which is protected from the onrush of liquid by a deflector 6. During filling, the partial vacuum is in part destroyed by a tube 11 opening in the vessel R, but when the liquid level reaches and closes the end of this tube the suction is established at a strength which causes the diaphragm 6 to move against its spring 9 to close the valve. The closing of the end of tube 11 may alternatively be effected by a float valve and the tube 11 may contain a diaphragm 16 with an adjustable opening to regulate the rise of liquid in tube 11. The gas displaced from container R may be arranged to pass into the container from which the liquid is supplied by means of a tube 21 connected to space 22. Should the suction device fail to act, the liquid will rise into chamber 22 and press on diaphragm 6 and thus close the valve 4. In the form shown in Fig. 5, the injector 55 is supplied through a valve 54 held off its seat by a bolt 72. When the liquid level reaches the end of tube 67, suction is established which deflects diaphragm 58 and thus moves pivoted lever 77 to withdraw the bolt. The valve may be reopened by a push-button 84 and the diaphragm may be manually actuated to close the valve by means of a stud 87. Should the suction device fail to act, the pressure of the gas in chamber 61 which is connected to chamber 62 acts on the diaphragm 58 to close valve 54. The inlet pipe 63 may be lengthened by the tube shown in Fig. 6.
Patent GB-1365510-A (GB)
Title: Manufacture of metal tubes
IPC: B21C23/32
Filed: 1972-04-12
Abstract: 1365510 Extruding; billet piercing T I CHESTERFIELD Ltd 12 April 1972 [21 May 1971] 16389/71 Headings B3P and B3H A metal tube is made by enlarging a pilot hole 11 of a billet 10, positioned in an extrusion press container 12, by means of an expanding tool 13 mounted on a mandrel 17 and having an expanding portion 15 and a guide portion 14 for guiding the tool 13 through the pilot hole 11, and thereafter extruding the billet 10 around the mandrel 17 by a ram 18, a lubricant being applied to the mandrel 17 and the pilot hole 11 and/or the expanding tool 13. After the expanding tool 13, which may be heated, has moved through the heated steel billet 10 to enlarge the pilot hole 11, a ram 18 is moved over the mandrel 17 to extrude the billet 10 between the mandrel 17 and a die insert 20 located between rings 21, 22. The tool 13 is pushed off the end of the mandrel 17 by the extruded tube. Prior to the enlarging and extruding operations, powdered glass is positioned in the pilot hole 11 and the mandrel 17 is sprayed with a lubricant comprising a mixture of powdered glass, clay, water, sodium silicate and preferably sodium aluminate. A glass ring 23 is positioned between the ring 22 and the billet 10 and a hollow glass cone 16 is positioned in a frusto-conical recess at one end of the billet pilot hole 11. Graphitic lubricants may alternatively be used.
Patent GB-707135-A (GB)
Title: Improvements in or relating to cathode ray tubes having evacuated envelopes comprising metallic and vitreous parts
IPC: H01J9/26
Filed: 1950-06-30
Abstract: 707,135. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., HAYES, A. G., McKEAG, A. H., and WELCH, E. E. June 26, 1951 [June 30, 1950], No. 16411/50. Class 39(1) The vacuum-tight joint between the glass end wall 2 and the metal body 1 of a cathode-ray tube is rendered vacuum-tight by a gasket 3 without the use of adhesive material. The glass, metal and gasket surfaces may be optically polished and the seal may subsequently be covered with wax or grease. The gasket 3 may be made of zinc which during evacuation is heated to 100-150‹C at which temperature the zinc is caused by atmospheric pressure to flow into the grooves 4; the zinc is non-deformable at the subsequent baking out temperature of 350-400‹C. The gasket may be made of copper, and it may be deposited on a silvered surface of the glass by plating or flame spraying and the grooves 4, 5 may be formed by spinning or machining. The silver coating may be produced by the application of a suspension of silver oxide in a solvent which is heated to vaporize the solvent and reduce the oxide.
Patent GB-476262-A (GB)
Title: Process of producing hydrogen peroxide from solutions of percompounds
IPC: C01B15/03
Filed: 1936-06-12
Abstract: In obtaining hydrogen peroxide by the distillation of solutions of percompounds, the distillation is discontinued before the concentration of the distillation residues reaches a concentration beyond which further hydrogen peroxide cannot be distilled without decomposition, and from these residues the remaining portions of the active oxygen are caused to crystallize in the form of per salts. Such crystallization may be effected directly by cooling, or after the previous dilution of the residue and the increase of the salt concentration by the addition of an inert salt or of a further quantity of the salt to be separated off.  Alternatively, a double decomposition may be effected with salts which form per salts. According to a modification, the distillation is effected with simultaneous separation of part of the per salt by lowering the acidity of the solution.  According to the example, an acid solution of ammonium persulphate from an electrolysis cell is distilled while increasing the rate of the supply of solution to the distilling chamber above the normal so that about 73 per cent of the active oxygen is obtained as hydrogen peroxide.  The residual solution is diluted to one half of its original volume, potassium hydrogen sulphate is added and 22,8 per cent of the original active oxygen content of the solution is crystallized out as potassium persulphate. The Specification as open to inspection under Sect. 91 comprises also causing a part of the per salt to separate during the distillation by reducing the heating temperature, and replacing the substances removed from the closed cycle process by crystallization after the separation of the per salts.  This subject-matter does not appear in the Specification as accepted.
Patent GB-570541-A (GB)
Title: Improvements relating to laundry and textile drying machines
IPC: D06F58/00
Filed: 1943-10-11
Abstract: 570,541. Textile drying machines. LISTER BROS., Ltd., and BROAD, L. F. Oct. 11, 1943, No. 16646. [CLass 34 (ii)] A drying machine for textiles has three sections, the first in the form of a chamber X which is provided with an endless adjustable conveyor 8, mounted on pulleys 6, 7 located respectively within and outside the chamber, and is divided by a partition 1 into two compartments 2, 3, in the one 2 of which the air is required to be relatively cool and humid and in the other 3 hot and dry, a tumbler section 12 for drying under conditions of high temperature and low humidity, and a shaker tumbler section 11 for partly or completely drying at low temperature and high humidity. Air is circulated through the machine by a fan 17 having an inlet duct 20, leading from a duct 19 in communication with the compartment 2, and an outlet duct 21 having two branches, one leading through a steam heater 24 to ducts 26, 27 communicating with the drying tumbler 12 and the compartment 3 respectively, and the other to a duct 30, including a heater heated by the condensate from the steam heater 24, communicating with the shaker tumbler 11. The compartments 2, 3 and the compartment 3 and tumbler 12 have connecting passages 5, 28 respectively, and the tumbler 11 an outlet to atmosphere, the arrangement being such that air will be continously circulated from the compartment 2 to the compartment 3 and tumbler 12 and back again through the passages 5, 28; at the same time air will be supplied to the tumbler 11, this air passing to the atmosphere and being compensated for by the entrance of atmospheric air through an aperture 16 in the compartment 2. Dampers are provided in the ducts 26, 30 for isolating the two tumblers during loading and unloading, also an adjustable damper 23 in the duct 21 for controlling the quantity of air leaving and entering the machine. The machine may include two or more drying and shaker tumblers, and, if desired, two fans may be employed, one for circulating heated air through the tumbler 12 and compartnent 3 and the second for exhausting air from the compartment 2 through the tumbler 11.
Patent GB-204098-A (GB)
Title: Improvements in jacks for lifting and other purposes
IPC: B66F3/35
Filed: 1922-06-16
Abstract: 204,098. Gaivõo, P. de Q. June 16, 1922. Jacks.-In pneumatic jacks the plunger 15 rests on a flexible bag 3 having a nipple 5 which passes through the wall of the cylinder 1. The nipple contains a ball valve 10 and is threaded for engagement with an air pump. A screw cap 13 carrying a pin 14 is provided for pushing the ball off its seating in order that air may escape through the aperture 12 and the plunger descend slowly. Reference has been directed by the Comptroller to Specification 189,057.
Patent GB-380090-A (GB)
Title: Improvements in pressure gauges of the hydrostatic ring balance type for use with fluid flow meters
IPC: G01L7/00
Filed: 1931-06-09
Abstract: 380,090. Pressure gauges. ELECTROFLO METERS CO., Ltd. and ENGEL, F. V. A. E., Abbey Road, Park Royal, London. June 9, 1931, No. 16758. [Class 106 (ii).] Relates to hydrostatic ring balances of the type having a hollow displaceable member 18 partly filled with liquid and adapted to be actuated by the differential pressure derived from a flow meter ; and consists in enclosing the member 18 in a sealed chamber 19, pressure fluid being led to one of the surfaces of the indicating liquid through a liquid seal and to the other surface through a tapping 23 in the wall of the container. The annular container 18 is mounted on a knife-edge 12 and is provided with the usual partition 20 dividing it into two parts. The high pressure pipe 26 is curved and passes through a liquid receptacle 25, a curved pipe 24 connected to the high pressure side of the member 18 moving over the end of the pipe 26. The low pressure pipe is connected to the container at 23 and fluid passes to the member 18 through the opening 22. In a modification, part of the annular chamber is cut away, one end being closed and the other left open. A curved pipe passing through the liquid in the chamber 18 admits the low pressure to the closed end of the member 18 while the high pressure fluid is brought to the sealed container and acts on the free surface of the indicating liquid. The chamber 18 is displaced against the influence of a weight or spring.
Patent GB-1002200-A (GB)
Title: Improvements relating to plastics sheet material
Inventor: HENLEY ERIC DOUGLAS
IPC: D01G1/04
Filed: 1963-04-29
Abstract: 1,002,200. Casting sheets. BRITISH RAILWAYS BOARD. April 17, 1964 [April 29, 1963], No. 16831/63. Heading B5A. A sheet of plastics material is formed by casting a resin upon the surface of a heated liquid, e.g. a liquid metal such as mercury, curing or setting the resin thereon, and then stripping the formed sheet therefrom. The resin may be a polyester resin, a nylon, a polyvinyl chloride or the like, and may be applied to the liquid as a powder, a liquid, a solution or an emulsion. The resin may contain lubricants, such as graphite or molybdenum sulphide, and/ or a filler, such as metal powder or glass fibres. In the embodiment shown a polyester and a polyester-catalyst-accelerator, from hoppers 2 and 3 respectively, are mixed in funnel 4 and applied, by means of spreader 8, to the surface of heated mercury contained in a bath 1. Chopped glass fibres 9 from roving 10 are then applied to the resin and pressed into the resin by passage under roller 15. The resin is then allowed to set and is then stripped from the liquid by means not shown. In the shown embodiment a further layer of resin is applied by applicator 10. The bath may be vibrated if required.
Patent GB-186138-A (GB)
Title: Improvements in and relating to thermionic signal receiving systems
IPC: H04B1/16
Filed: 1921-06-20
Abstract: 186,138. British Thomson - Houston Co., Ltd., (General Electric Co.). June 20, 1921. Thermionic amplifiers and detectors.-In a thermionic signal receiving system of the type described in Specification 117,283, signalling potentials are simultaneously impressed upon the anode 3 and the third or plate electrode 4; the cathode grid circuit 2 - - 5 and the cathodethird electrode circuit 2 - - 4 have negative resistance characteristics; and the cathode-grid circuit is tuned to a frequency slightly different from that of the received signals. The negative resistance characteristics are given to the cathode-grid and cathode-third electrode circuits by adjusting the potentials applied to the grid 5 and to the third electrode 4 at the points 8 and 7, Fig. 1, in the common battery 6. The resultant tendency of the cathode-third electrode circuit to self-oscillation is eliminated because the transformer secondary 10 is common both to this circuit and to the cathode-anode circuit, and because a change of current in one circuit is accompanied by a corresponding but opposite change in the other circuit. A tuned circuit 11, 12 is included in the other self-oscillatory circuit, whereby potential variations differing from the signal frequency may be applied to the grid 5 so as to secure audible beat effects. Fig. 3 shows a family of characteristic curves showing the relation between third electrode potential and current for different values of grid voltage. The point 7, Fig. 1, is normally chosen so as to coincide with the point C, Fig. 3. The effect of signal potentials impressed upon the transformer 10 will then be to vary the third electrode potential between the points C and E. The corresponding variations of grid potential, if synchronous with the applied signals, would result in a half-wave rectification of the signals in the cathode-third electrode circuit, but, if the circuit 11, 12 is suitably tuned, a beat effect will be obtained which will give an audible note in the telephones 14. Owing to the fact that any current-change in the cathode-third electrode circuit is accompanied by an equal but opposite change in the cathode-anode circuit, the current though the secondary of the transformers 10 will be substantially independent of the signalling potential. For the same reason, the telephones 14 may equally be placed in the anode-cathode circuit, as in Fig. 2, wherein the different batteries are shown separately, and a positive resistance 17 is inserted in the cathode-third electrode circuit in order to increase amplification. Specification 184,875 also is referred to.
Patent GB-251471-A (GB)
Title: An improved starting gate for use on racecourses
IPC: A63K3/02
Filed: 1925-07-02
Abstract: 251,471. Barry, R. H., Bennett, S., Hoare, A. S., Runnails, J. D., and Streeter, J. S. July 2, 1925. Starting-gates for horse races.-In race starting apparatus of the kind in which a tape moves. outwards and upwards on release, swinging arms. carrying the tape are first accelerated and then retarded, until they come to rest in their upper-- most position. Arms C are pivotally mounted on frames composed of posts A, B on each side of the course, and each arm C carries a ratchet disc F. A pawl M engages with a tooth K on the disc to hold the arm C in its lowest position, as shown in Fig. 2. A stud G carried by the disc F is engaged by a wire N connected by a spring 0 to a lever P, so that on release of the pawl M the arm is swung in a clockwise direction. The arm is brought to rest by a second stud H engaging the wire N, as shown in Fig. A, and a pawl L engages teeth J on the disc F to secure the arm. The studs G, H may be placed on opposite sides of the disc, in which case two wires N are employed. The levers M on each side of the course are released simultaneously by hand or foot levers. The tape R, which may be adjustable in length, is held taught by means of a spring
Patent GB-772776-A (GB)
Title: Hydraulic excavator
IPC: E21C45/00
Filed: 1955-06-14
Abstract: 772,776. Hydraulic-excavating apparatus. CRAGGS, J. H. June 14, 1955, No. 17055/55. Class 68 (1). In an hydraulic excavator for subterranean deposits accessible by the open pit method a nozzle assembly 14 is secured to the lower end of a casing 16 extending to the surface and a casing 10 and a plate 22 are disposed concentrically of and secured to the casing 16 and assembly 14 to form a manifold chamber into which liquid, preferably water, under pressure is admitted from a supply pipe 24. Said liquid passes from the manifold chamber through vertical passages in the annular upper part of the assembly 14 and is discharged upwards through nozzle 60 and downwards through nozzle 46. The downwardly directed jet from nozzle 46 breaks up the deposits and the suspension thus created is drawn in through radially directed ports 56 in the annular upper part of the assembly and urged upwards through the casing 16 due to the suction created about the assembly by the jet from the nozzle 60. A Venturi is fitted in the entrance to the casing 16. Nozzle 36 on a plate rotatable about casing 16 provides a jet for breaking down the side walls of the excavation formed by the jet from nozzle 46. The discharge casing has a dimensional capacity greater than that of the sum capacities of the nozzles 60, 46, 36 and the material excavated during any unit of time.
Patent GB-1386274-A (GB)
Title: Printintg telegraph mechanism
IPC: B41J1/46
Filed: 1972-04-13
Abstract: 1386274 Selective printing CREED & CO Ltd 13 April 1972 17058/72 Heading B6F A selective printer comprises a print drum 1 which is rotatable to a limited extent but not axially or radially displaceable with respect to a coaxial shaft 2, the shaft 2 being driven stepwise to cause the drum 1 to perform oscillations with respect to the shaft 2 such that type characters on the drum are successively stationary with respect to a print hammer (not shown). The drum 1 and shaft 2 may be coupled by helical springs 9 as shown or by leaf springs (3, Figs. 1, 2, not shown).
Patent GB-103641-A (GB)
Title: An Improved Resilient Pivotal Connection between an Alternating Current Electro Magnet and its Armature.
IPC: H01H50/30
Filed: 1916-11-28
Abstract: 103,641. Akt.-Ges. Brown, Boveri, et Cie. Jan. 10, 1916, [Convention date]. Hinges readily separable about hinge pin.-The pivot pin e of the armature b of an alternating- current electro-magnet is pressed against the sides of bearing notches d in the core a by the use of endless rubber bands or helical springs f which are looped round the pivot pin e and round projections g; noise due to play of the pivot pin is thereby prevented. Plates h may be fastened over the springs &c. f and may be fixed to the projections g by screws i.
Patent GB-955391-A (GB)
Title: Method of producing shaped hollow bodies and apparatus for carrying out such methods
IPC: B29C49/42
Filed: 1960-05-16
Abstract: 955,391. Blow-moulding hollow articles. BRITISH XYLONITE CO. Ltd. May 16, 1960 [Jan. 12, 1960; March 29, 1960], No. 17126/60. Heading B5A. A tubular workpiece in a magazine 19 is received and gripped on a holder pivotally mounted on a conveyer 10 which carries it through an oven. The heated workpiece is then positioned over the mandrel 9 of a blow-moulding machine 5, 6. In a modification the holder itself may act as the mandrel. The workpiece may be heated differentially in a longitudinal or circumferential direction. The holders may be hollow to allow hot air to circulate within. The magazine 19 may also be heated. Either the mould may be moved up and down to engage the workpieces or the workpieces may be moved to the mould by additional holders. In addition the mould may move with the conveyer during part of its travel. The workpiece may be made by extrusion or injection. In a modified form of apparatus, workpieces are loaded on the ends of arms 36 mounted on conveyer elements 25 which are moved intermittently through an oven provided with heating elements 41 and a fan 42. The blowmoulding machine has two mandrels 9 and two moulds mounted side by side.